缓存在Flex Web应用程序中如何工作？

Question

I'm new to Flex and want to learn about how to implement client-side caching for data that is repeatedly requested from the server.

Let's focus on a simple example to discuss caching. Take a Flex application having several screens, where each screen plots a line series (of x and y data). The user can switch between the screens, and each time a screen is visited or re-visited, numerical arrays for both x and y data are requested from the server. The values of the x and y data on the server, of course, never change.

I want to learn what techniques are available that could be used to implement caching in the browser or AIR application such that once the x and y data is downloaded the first time, the application pulls these arrays from cache when re-visiting this screen in the future.

How is this done?

Answer 1

Well it depends on what you want to cache. Swf's are cached by the browser. So swfs are not downloaded each time the browser points to your site. If you want to remember what the user typed before on a screen or autocomplete or just cache non-sensitive data you could use a SharedObject. And then there's always the traditional way of storing the data you retrieve from the server in an ArrayCollection or some other object in memory and refer to it multiple times.